Convenient and efficient kelp seedling breeding method using improved breeding screen dark treatment technique

Abstract

The invention discloses a convenient and efficient kelp seedling breeding method using an improved breeding screen dark treatment technique. Seedling breeding attaching substrata are replaced with vinylon ropes from north China traditional manila ropes, and embryo spores are controlled at a low density level 10-15/microscope at a magnification of 160X; after the spores are collected, breeding screens are directly stacked by multiple layers and are put in a dark environment, and are stored under the conditions of running water and low temperature, and then, the breeding screens are laid flat ina single layer in a seedling breeding pond. The convenient and efficient kelp seedling breeding method disclosed by the invention has the advantages that the seedling breeding method is suitable forlarge-scale kelp seedling production, not only can obtain high-quality seedlings, but also simplifies the operation of the breeding curtain dark treatment technique, reduces the capacity of a production workshop occupied by kelps at the early seedling breeding production stage and production investment, shortens the normal seedling breeding time, and greatly reduces the production cost.

Description

technical field [0001] The invention relates to a method for raising kelp seedlings. The invention belongs to the technical field of marine aquaculture. Background technique [0002] my country is a big country in kelp cultivation, and the breeding sea area starts from Liaoning in the north and ends in Fujian in the south. As the seed production method used in the cultivation of the prior art, the zoospores released by the kind of kelp are collected on a suitable attachment base by artificial means, and through technical measures such as temperature control, light control, and fertilization and the cultivation process in the nursery room, the seedlings are made All kinds meet the standards stipulated in GB / T15807-2008. [0003] In view of the disadvantages of traditional kelp seedlings such as long cycle and high cost, some scholars have proposed to preserve the seedling curtain (gametophyte stage) under low temperature and dark conditions to shorten the "multiple cultivat...

AI Technical Summary

Problems solved by technology

Dark treatment at 10-15°C (References 4-5), although saving energy, under this temperature condition, seed metabolism is vigorous, epiphytic bacteria and miscellaneous algae grow faster, and dark treatment seriously affects the development of gametophytes and the survival of young sporophytes rate, increasing the instability of the production

[0008] In Document 4, after the seedlings were treated in the dark, the water temperature for conventional cultivation was increased to 15-20°C, which exceeded the temperature range suitable for the growth and development of kelp seedlings, and a large number of epiphytic bacteria and miscellaneous algae multiplied, resulting in low seedling survival rate and disease onset. High rate, seriously affecting production, not suitable for large-scale production

Document 5 also confirmed that the 12-day dark treatment (10±0.5°C) starting from the 8th day of spore collection, even if the normal cultivation temperature is 10-11°C, the seed curtain can only reach the second-class standard; Not yet up to the third category standard

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